Improvement in chairs



UNITED STATES PATE FRANK L. PATCH, OF FLORENCE, MASSACHUSETTS.

IMPRovEMENT IN` CHAIRS.

Specication forming part of Letters Patent No. 186,870, dated January 30, 1877; application led July 10, 1876.

To all lwhom it may concern Be it known that I, FRANK L. PATCH, of Florence, in the county ot' Hampshire and State of Massachusetts, have invented certain new and useful Improvements Pertaining to a Chair, of which the following is a specication, reference being had to the accompanying drawings, where- Figure 1 is a side view. Fig. 2 is a view in central vertical section,with the chair adjusted for reclining therein, and raised on its rollers. Fig. 3 is a bottom view with the legs cut oli'. Fig. 4 is a side view with the apparatus adjusted as a cradle.

I will first describe the construction and operation of the chair, and then claim the features in which the invention consists.

The-letters a denote the four legs; b, the

rocker arms; c, cranked levers, pivoted in mortises in the rocker-arms, bearing rollers d at the lower end, and connected from front to rear by connecting-rods e, which connectingrods are transversely connected by the cranked shaft f.

By throwing down and backward the upper end of one of the levers c, the rollers are thrown below the rockerarms, and the chair raised from the Hoor, so that it can be wheeled about. The system of connecting-rods c and connecting-shaft f make all the levers c operate simultaneously.

The pintle g, fast on the bottom of seat h, runs through and rotates in hub i, supported by legs a, so that the seat and its dependencies can be rotated or turned around independently of the legs. It can be secured in different adjustments by the slide j, slotted at its inner end, and such slot taking hold of the upper part of a leg, a.

The letter k denotes an extension-frame, all

in one piece, extending above the seat to form a back, and below the seat to hold a foot-rest, and it is pivoted to the sides of the seat by pins or screws l. This extension-frame can be swung up from the position shown in Fig. l to the position shown in Fig. 2, to serve the purpose of a recliningchair; or even still higher to the position shown in Fig. 4, to serve the purposes of a cradle, and is secured in all these positions by the springpawls m, running through the side bars ot' the extension-frame, and titting into socket-holes fn, in the arms o. The foot-rest 10 slides, by .means of guide rods 1, attached to its sides, in slots s, made on the inner sides ot' the side bars of the extension-frame. Connecting-rods t run from the foot-rest to the arms o, which, When the fore end of the extension -frame is thrown up, cause the footrest to shoot forward into position for use, and correspondingly cause the foot-rest to retreat when the fore end of the extension-frame is thrown down. The foot-Slat u is pivoted in the sides of the foot-rest, so as to adapt itself to the bottoms of the users feet.

To adjust this chair as a cradle, from the adjustment shown as Fig. l, the fore end of the extension-frame is thrown up till this frame lies as near horizontal as its curved shape will permit, the slide j is drawn back, and the seat, with its dependences, rotated laterally a quarter-turn, and the slide j again thrown inward to engage with another leg. This brings the apparatus into adjustment shown in Fig. 4, which I call the cradle adjustment.

l claim as my inventionl. The combination of the pivoted cranked levers c, connecting-rods e, and transverse cranked shaft f with the legs and seat of a chair, substantially as described, and for the purpose set forth.

2. In combination, the| seat and arms h o, the extension-trame lc, the foot-rest p, sliding in the extension frame, and the connectingrods t, all substantially as described, and for the purpose set forth.

3. In combination, seat h, pintle g, hub '11, legs c, and slide j, substantially as described, and for the purpose set forth.

FRANK L. PATCH.

Witnesses:

H. S. GoULD, H. K. PARSONS. 

